EP 1695499 B1 20170104 - CHANNEL ESTIMATION BY ADAPTIVE INTERPOLATION
Title (en)
CHANNEL ESTIMATION BY ADAPTIVE INTERPOLATION
Title (de)
KANALSCHÄTZUNG DURCH ADAPTIVE INTERPOLATION
Title (fr)
EVALUATION DE VOIE PAR INTERPOLATION ADAPTATIVE
Publication
Application
Priority
- EP 2004012797 W 20041111
- US 51926103 P 20031113
- US 92092804 A 20040818
Abstract (en)
[origin: US2005105647A1] Methods and apparatus that achieve good channel estimation without using unnecessarily complex interpolation filters are described. Adaptive interpolation filtering of a signal in a receiver includes determining at least one correlation function parameter of the channel and determining a filter configuration based on the correlation function parameter. Interpolation filtering is then performed on the signal using the determined filter configuration. The interpolation may be performed in time, where a Doppler frequency shift can serve as the correlation function parameter, or in frequency, where a root mean square or maximum delay spread can serve as the correlation function parameter, or both. A worst case signal-to-noise ratio may be used in determining the filter configuration, or, optionally, the signal-to-noise ratio can determined in real time. The filter configuration can be determined in real time or selected from one of a plurality of predetermined configurations having different complexities.
IPC 8 full level
H04L 5/00 (2006.01); H04L 25/02 (2006.01); H04L 27/26 (2006.01)
CPC (source: EP KR US)
H04B 1/12 (2013.01 - KR); H04B 1/40 (2013.01 - KR); H04L 25/0222 (2013.01 - EP US); H04L 25/0234 (2013.01 - EP US); H04L 27/38 (2013.01 - KR); H04L 5/0048 (2013.01 - EP US); H04L 25/022 (2013.01 - EP US); H04L 27/2647 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
US 2005105647 A1 20050519; US 7433433 B2 20081007; CN 102710561 A 20121003; CN 102710561 B 20160803; CN 1883170 A 20061220; CN 1883170 B 20121010; EP 1695499 A2 20060830; EP 1695499 B1 20170104; HK 1098267 A1 20070713; JP 2007511942 A 20070510; JP 4758352 B2 20110824; KR 101000145 B1 20101210; KR 20060120111 A 20061124; WO 2005048546 A2 20050526; WO 2005048546 A3 20050811
DOCDB simple family (application)
US 92092804 A 20040818; CN 200480033690 A 20041111; CN 201210164544 A 20041111; EP 04797825 A 20041111; EP 2004012797 W 20041111; HK 07104551 A 20070427; JP 2006538797 A 20041111; KR 20067009372 A 20041111